He married first in Carteret County, North Carolina, October 24, 1872, Margaret "Maggie" Glancy. She was born in North Carolina, April 10, 1850; died August 8, 1893; buried at Gales Creek Community Cemetery, Carteret Co., NC; findagrave # 24748396.

He married second March 3, 1897, Bertha Loftin. She was born in North Carolina in February 1870; living 1900.Barclay is listed in the 1880 US Census in White Oak, Carteret Co., NC, as Barclay, 33, b. NC ca. 1847, farmer; Margret, 26; Wm., 7; James B., 4; John Q., 1.